Cellular System Information Sharing via Device Relay
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Solution Overview
Problem
Conventional cellular network selection processes in electronic devices often result in battery drain and delays due to comprehensive scans of available connections and frequency bands when powering on or exiting airplane mode, leading to inefficient battery usage and prolonged service acquisition times.
Innovation Solution
Implementing a system where devices can receive cellular system information from other devices or centralized repositories via Bluetooth, Wi-Fi, NFC, or Ultra Wideband connections, allowing them to select optimal cellular network connections based on available parameters such as signal strength, congestion, and quality of service, thereby reducing the need for extensive scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the device scans all available cellular network connections and frequency bands to select the best connection, then the reliability of network connection is improved, but the battery consumption increases and service acquisition time is prolonged
Solution Approach 1:
The patent applies preliminary action by having a first device perform the comprehensive cellular network scan and store the results in advance. When a second device needs to connect to a cellular network, it receives the pre-scan information from the first device, eliminating the need for the second device to perform its own extensive scan. This resolves the contradiction by preparing the network information beforehand, so that devices can connect quickly without extensive scanning, thus reducing battery consumption while maintaining connection reliability.
2Reliability
If the device scans all available cellular network connections and frequency bands to select the best connection, then the reliability of network connection is improved, but the time to acquire service is prolonged
Solution Approach 1:
The patent applies preliminary action by having a first device perform the comprehensive cellular network scan and store the results in advance. When a second device needs to connect to a cellular network, it receives the pre-scan information from the first device, eliminating the need for the second device to perform its own extensive scan. This resolves the contradiction by preparing the network information beforehand, so that devices can connect quickly without extensive scanning, thus reducing service acquisition time while maintaining connection reliability.
3Measurement precision
If the device performs comprehensive scanning of cellular networks, then the quality of network selection is improved, but the processing intensity increases
Solution Approach 1:
The patent applies the intermediary principle by introducing a communication channel between devices. The first device performs the comprehensive scan and stores results, then acts as an intermediary by providing this pre-processed information to the second device. The second device receives the information and can make an informed network selection without performing its own extensive scan. This resolves the contradiction by using another device as an intermediary to provide processed network information, reducing the processing intensity for individual devices while maintaining accurate network selection.
Data Source
AI summary
Approaches enable a device, such as a cellular-enabled device, to receive cellular system information from another device in response to a request by the cellular-enabled device, and then to select a cellular network connection to which the cellular-enabled device can connect based on the cellular system information. The cellular-enabled device may determine the availability of the cellular system information in a number of ways, such as by detecting a Bluetooth broadcast from another device and initiating a paired connection between the two devices. Once the paired connection is established, the cellular-enabled device may make a service discovery request to learn that the other device is capable of broadcasting the cellular system information over the connection between the devices. The cellular system information may be used by the cellular-enabled device to select one cellular network connection, from a set of available cellular network connections compatible with the cellular-enabled device, to connect to.